<!DOCTYPE HTML>
<html>
<head>
<meta charset="UTF-8" />
<title>纯html+css导航</title>
<!-- mulder -->
<!-- qq:10221408 -->
<!-- 只支持 chrome firefox -->
<style>
*{
	margin:0;
	padding:0;
}
.clear:after {
    clear: both;
    content: ".";
    display: block;
    height: 0;
    visibility: hidden;
}
nav{
	display:inline-block;
	border:1px solid #505255;
	border-bottom: 1px solid #282C2F;
	-moz-border-radius: 5px;
	-webkit-border-radius: 5px;
	margin:50px;
	-webkit-box-shadow:1px 1px 3px #292929;
    -moz-box-shadow:1px 1px 3px #292929;
}
.clear li{
	list-style:none;
	float:left;
	border-right: 1px solid #2E3235;
	position: relative;
	/*background: -moz-linear-gradient(top, #fff, #555D5F 2% ,#555D5F  50%,#3E4245 100%);
	background: -webkit-gradient(linear, 0 0, 0 100%, from(#fff), color-stop(2%, #555D5F), color-stop(50%, #555D5F),to(#3E4245));*/
	background:#555D5F;
}
.clear li:hover{
	/*background: -moz-linear-gradient(top, #fff, #3E4245 2% ,#555D5F  80%,#555D5F 100%);
	background: -webkit-gradient(linear, 0 0, 0 100%, from(#fff), color-stop(2%, #3E4245), color-stop(80%, #3E4245),to(#555D5F));*/
	background:#3E4245;
	-moz-transition: background 1s ease-out;
	-webkit-transition: background 1s ease-out;
}
.clear li a{
	display:block;
	height:40px;
	line-height:40px;
	padding:0 30px;
	font-size:12px;
	color:#fff;
	text-shadow: 0px -1px 0px #000;
	text-decoration:none;
	white-space:nowrap;
	border-left: 1px solid #999E9F;
    border-top: 1px solid #999E9F;
	-moz-border-top-left-radius: 2px;
	-webkit-border-top-left-radius: 2px;
	
	z-index:100;
}
.clear li > a{
	position:relative;
}
.clear li.first a{
	-moz-border-radius-topleft: 4px;
	-moz-border-radius-bottomleft: 4px;
	-webkit-border-top-left-radius: 4px;
	-webkit-border-bottom-left-radius: 4px;
}
.clear li.last{
	border-right: 0 none;
}


dl{
	position:absolute;
	display:block;
	top:40px;
	left: -25px;
	
	width:165px;
	
	background:#222222;
	-moz-border-radius: 5px;
	-webkit-border-radius: 5px;
	
	-webkit-box-shadow:1px 1px 3px #292929;
    -moz-box-shadow:1px 1px 3px #292929;
	
	z-index:10;
            
}
.clear li:hover dl{
	top:50px;
	display:block;
	width:145px;
	padding:10px;
}
dl a{
	background:transparent;
	border:0 none;
	-moz-border-radius: 5px;
	-webkit-border-radius: 5px;
	-moz-transition: background 0.5s ease-out;
	-webkit-transition: background 0.5s ease-out;
	
	z-index:50;
}
dl a:hover{
	color:#FFF;
	background:#999E9F;
	-moz-transition: background 0.3s ease-in-out, color 0.3s ease-in-out;
	-webkit-transition: background 0.3s ease-in-out, color 0.3s ease-in-out;
}
dd{
	margin-top:-40px;
	opacity:0;
	width:145px;
	-webkit-transition-property:all;
	/*-webkit-transition-timing-function: cubic-bezier(5,0,5,0);*/
	-moz-transition-property: all;
	/*-moz-transition-timing-function: cubic-bezier(5,0,5,0);*/
	/*-webkit-transition-delay:5s;
	-moz-transition-delay:5s;*/
}
.clear li:hover dd{
	margin-top:0;
	opacity:1;
}
.clear li dd:nth-child(1){
	-webkit-transition-duration: 0.1s;
	-moz-transition-duration: 0.1s;
}
.clear li dd:nth-child(2){
	-webkit-transition-duration: 0.2s;
	-moz-transition-duration: 0.2s;
}
.clear li dd:nth-child(3){
	-webkit-transition-duration: 0.3s;
	-moz-transition-duration: 0.3s;
}
.clear li dd:nth-child(4){
	-webkit-transition-duration: 0.4s;
	-moz-transition-duration: 0.4s;
}
dt{
	display:none;
	margin-top:-25px;
	padding-top:15px;
	height:10px;
}
.clear li:hover dt{
	display:block;
}
.Darrow{
	float:right;
	margin:18px 10px 0 0;
	border-width:5px;
	border-color:#FFF transparent transparent transparent;
	border-style:solid;
	width:0;
	height:0;
	line-height:0;
	overflow:hidden;
	
	cursor:pointer;
	
	text-shadow: 0px -1px 0px #000;
	
	-webkit-box-shadow:0px -1px 0px #000;
    -moz-box-shadow:0px -1px 0px #000;
}
.arrow{
	margin:0 auto;
	margin-top:-5px;
	display:block;
	width:10px;
	height:10px;
	background:#222222;
	-webkit-transform: rotate(45deg);
	-moz-transform: rotate(45deg);
}
</style>
</head>
<body>
<nav>
	<ul class="clear">
    	<li class="first"><a href="#">菜单一</a></li>
        <li>
        	<span class="Darrow"></span>
            <a href="#">菜单二</a>
        	<dl>
            	<dt><span class="arrow"></span></dt>
                <dd><a href="#">子菜单一</a></dd>
                <dd><a href="#">子菜单二</a></dd>
                <dd><a href="#">子菜单三子菜单三</a></dd>
            </dl>
        </li>
        <li>
        	<span class="Darrow"></span>
            <a href="#">菜单三</a>
        	<dl>
            	<dt><span class="arrow"></span></dt>
                <dd><a href="#">子菜单一</a></dd>
                <dd><a href="#">子菜单二</a></dd>
                <dd><a href="#">子菜单三子菜单三</a></dd>
            </dl>
        </li>
        <li>
        	<span class="Darrow"></span>
            <a href="#">菜单四</a>
        	<dl>
            	<dt><span class="arrow"></span></dt>
                <dd><a href="#">子菜单一</a></dd>
                <dd><a href="#">子菜单二</a></dd>
                <dd><a href="#">子菜单三</a></dd>
                <dd><a href="#">子菜单四</a></dd>
            </dl>
        </li>
        <li><a href="#">菜单五</a></li>
        <li><a href="#">菜单六</a></li>
        <li><a href="#">菜单七</a></li>
        <li class="last"><a href="#">菜单八</a></li>
    </ul>
</nav>
</body>
</html>